Quick answers
- Which hospitals does Greggory J. Martinez work at?
- Medicare's official clinician data lists Greggory J. Martinez at 3 hospitals: Baptist Medical Center, Methodist Hospital and Methodist Hospital Stone Oak. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Greggory J. Martinez see patients?
- Medicare's clinician data lists 7 practice locations, including Live Oak, TX and San Antonio, TX. Call before your visit to confirm the address.
- What is Greggory J. Martinez's specialty?
- Medicare lists Anesthesiology as the primary specialty, and also Pain Management.
- Does Greggory J. Martinez accept Medicare assignment?
- Yes. Medicare's clinician data says Greggory J. Martinez accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Greggory J. Martinez?
- (210) 600-9766, as listed in official Medicare / NPI Registry data.
- What is Greggory J. Martinez's NPI number?
- 1013370642. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Greggory J. Martinez works
Medicare's Facility Affiliation Data lists Greggory J. Martinez at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Baptist Medical CenterSan Antonio, TX · Acute Care Hospital · CCN 450058
- Methodist HospitalSan Antonio, TX · Acute Care Hospital · CCN 450388
- Methodist Hospital Stone OakSan Antonio, TX · Acute Care Hospital · CCN 670055
Practice locations
Addresses where Greggory J. Martinez is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 11227 Toepperwein Rd, Suite 100Live Oak, TX 78233 (210) 600‑9766
- 3415 Paesanos Pkwy, Suite 100San Antonio, TX 78231 (210) 600‑9766
- 423 Treeline Park, Suite 202San Antonio, TX 78209 (910) 949‑6000
- 5106 W Loop 1604San Antonio, TX 78251 (726) 243‑2000
- 520 Madison Oak DrSan Antonio, TX 78258 (210) 297‑4000
Group practices
Medicare enrollment lists Greggory J. Martinez as a member of these groups (CMS data updated 2026-10-02).
- U S Anesthesia Partners of Texas, PA2,752 clinicians in the group
- Endo Sedation LLC293 clinicians in the group
- Lone Star Anesthesia Partners PLLC56 clinicians in the group
- Sigma Pain Clinic PA5 clinicians in the group
Specialties
- Anesthesiologyprimary
- Pain Managementalso
Other anesthesiologists in Live Oak
Clinicians with the same Medicare primary specialty in Live Oak, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1013370642 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians